Question Discussion & Solution

Shark, Barracuda and Whale are types of aquatic animals but Humming is a bird.

The correct answer is the save as.

• Using the F12 key in MS Word, Save as dialogue box opens​.

​Key Points

• F12 key used with other keys in MS word:​.
  • Ctrl+F12 
    • ​Opens a document in Word.
  • Shift+F12 
    • Saves the Microsoft Word document (like Ctrl+S).
  • Ctrl+Shift+F12
    • Prints a document in Microsoft Word.

Additional Information

• Keys for performing a mail merge
  • Preview a mail merge
    • ​ALT + SHIFT + K
  • ​Merge a document
    • ​ALT + SHIFT + N
• ​Insert Table
  • ​To open the Insert tab to insert tables, pictures, and shapes, headers, or text boxes.
    • Alt+N
• Insert Picture
  • ​The shortcut key to import a picture is Ctri+G

The correct answer is Rice.

• Rice blast disease, caused by Magnaporthe oryzae (Ascomycota), occurs in about 80 countries on all continents where rice is grown, in both paddy fields and upland cultivation.
• The extent of damage caused depends on environmental factors, but worldwide it is one of the most devastating cereal diseases, resulting in losses of 10–30% of the global yield of rice.
• Other common diseases of the crop of rice are - Blight, Bacterial leaf streak, Brown spot, Sheath blight, False smut, etc.

Additional Information

• The biological agents that causing diseases to plants are known as pathogens. 
• Some of the viral diseases in plants are - bud blight (soyabeans), Curly tops (Beans, tomato, etc.), Mosaic leaf (Tomato, pea, potato,tobacco, etc.).
• Some of the bacterial diseases in plants are - Blights (vegetable crops), Bacterial wilts (Tobacco, potatoes, etc), Cankers (Woody plants), Leaf Spots, Soft Wrots, etc.
• Some of the fungal diseases in the plants are - Cankers, Ergot, Rusts, Root rots, Scabs, Smuts, etc.
   

Concept:

• Heat Transfer: Heat is transferred from one place to another in substance due to temperature difference. 

• Evaporation: In this process, the liquid form a substance tends to convert in the gaseous phase on the uppermost surface due to heat and pressure.
• Condensation: In this process, the gaseous phase of an object tends to convert into liquid form due to pressure and temperature.

Explanation:

The other end of a wooden spoon will not become cold when it is dipped in a cup of ice cream because wood is a bad conductor, not a good conductor.

The correct answer is Aravali Ranges.

• The oldest fold mountain ranges in the world is Aravali Ranges.

Key Points

• Aravalis are one of the world’s oldest fold mountains running in north-east to south-east direction from Delhi to Palampur in Gujarat. 
• It is an example of the relict mountain.
• Guru Shikhar is the highest peak of Aravali.
• The Aravalli Range dates back to times when the Indian Plate was separated from the Eurasian Plate by an ocean. 
• Three major rivers and their tributaries flow from the Aravalli, namely Banas, Sahibi and Luni.

Additional Information

• The Western Ghats are locally known by different names such as Sahyadri in Maharashtra, Nilgiri hills in Karnataka and Tamil Nadu and Annamalai hills, Cardamom hills in Kerala.
• The Himalayas are young fold mountains of the tertiary period, which were folded over the Tethys Sea due to inter-continental collision.
• They stretch from the Indus River in the West to the Brahmaputra River in the East.
• The Alps are the highest and most extensive mountain range system that lies entirely in Europe, and stretch approximately 1,200 km.